Lilypond and ETF

"Or you can use it to print music from other programs, using one of
the numerous input filters."

Does there exist a filter to convert ETF ( Coda's Enigma
Transportable File format)? I am interested in converting Finale
(versions 2001 and 2002 for mac) to an open source file format. If
there is such a filter, and if I can compile Lilypond on OS X, it
would be ideal. Does this sound possible?